On Wednesday, the Environmental Protection Agency proposed strengthening a successful yet contentious Obama-era rule limiting toxic pollutants, like mercury, from coal-fired power plants. POLITICO’s Alex Guillén breaks down the details of the updated rule, the potential impact on the nation’s already shrinking fleet of coal plants, and how the rule fits into the Biden administration’s broader climate agenda. Plus, an appeals court dismissed a lawsuit from Louisiana and other Republican-controlled states challenging the Biden administration’s social cost of carbon.   Alex Guillén is an energy reporter for POLITICO Pro.  Josh Siegel is an energy reporter for POLITICO.  Nirmal Mulaikal is a POLITICO audio host-producer. Raghu Manavalan is a senior editor for POLITICO audio. Jenny Ament is the executive producer of POLITICO’s audio department. Learn more about your ad choices. Visit megaphone.fm/adchoices